The purpose of this thesis is the calculation of the magnitude moment Mw with spectral analysis for
34 seismic events, which the Hellenic Seismological Network of Crete (HSNC) recorded at the
center of the Hellenic arc with the use of the seismic recording editing application, and the
comparison of the results with those of other networks in the Hellenic region. The editing of the
seismological recording, as well as the finding of the seismological parameters was done with the
Seisan application.